FlowKeyFrom4Tuple creates a FlowKey (suitable for use as a map key) from a TCP 4-tuple.

NewTCP creates a demuxer.TCP, which is the system which chooses which channel to send TCP/IP packets for subsequent saving to a file.

FlowKey characterizes a TCP/IP flow without judgement about what direction the flow is.

TCP sends each received TCP/IP packet to the proper saver.

UUIDEvent is the datatype sent to a demuxer's UUIDChan to notify it about the UUID of new flows.